The depth of the dishes is designed to reduce crosstalk between the elements in the close-packed array, but this is an uncommon design for radio telescopes (though similarly deep dishes have been used for other close-packed radio arrays such as HERA[1]}, CHIME[2]}, and CHORD[3]}), and requires greater support than more typical shallow profile dishes.
Figure REF  shows a prototype dish located at the Hartebeesthoek Radio Astronomy Observatory (HartRAO). The pictured prototype dish was manufactured by MMS Technology Ltd. in South Africa (mmstechnology.co.za). A second metal dish prototype was constructed jointly by NVJ and Rebcon Engineering, but is not discussed here.
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